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Sticker of Formosan jewelwing
Bug card No. 1738 of 4,939

Formosan jewelwing

Matrona cyanoptera

The Formosan jewelwing is a beautiful damselfly that lives only in Taiwan. The male has shiny metallic blue wings and a green body that glitters blue.

Lives in
Only in Taiwan, by shallow streams and lakes in low mountains
Length
6.2 to 6.7 cm (2.4 to 2.6 in)
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Damselflies have no sting and cannot hurt you.
What does it eat?
It catches small flying insects. Its babies live in the water and hunt tiny water animals.
For real!Photo of Formosan jewelwing
Picture by 李奕寯. CC0, via Wikimedia Commons.

How big is it?

How long is it?

Formosan jewelwing about 6.7 cm long (2.6 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
as long as 2 toy building bricks in a rowcould fly across a whole football pitch in 27 secondsmoves 58 times its own body length every second

How big is Formosan jewelwing compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Females have brown wings with a white spot near the tip.

2

Males sit on plants by the water and chase away any other males that come near.

3

To win a female, the male shows off his wings and the tip of his tail.

4

After mating, the male stays and guards the female while she lays her eggs under water plants.

you asked

Most asked questions about Formosan jewelwing

?Where does the Formosan jewelwing live?

Only in Taiwan, around shallow streams and lakes in low mountains.

?Is the Formosan jewelwing dangerous?

No. Damselflies have no sting and cannot hurt people.

For bug experts

Scientific name
Matrona cyanoptera
Group
Dragonflies and damselflies
Family
Calopterygidae
Classification
Insecta > Odonata > Calopterygidae
Lives on
Asia

Where the facts come from

  1. Matrona cyanoptera (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by 李奕寯. CC0, Wikimedia Commons. The sticker of this bug is drawn from this picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

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More from the same group: Dragonflies and damselflies

Also at home here: Ponds, rivers and shores

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